Liz Cass is a mother, writer and community organiser in Leeds. A former science teacher, she now works with Energy Heroes, a primary school program that delivers mathematics through the context of climate change. She has been involved in climate activism since early 2019, holding the government accountable and driving the change needed to protect future generations of life on this planet. In December 2020 she published ‘365 Days of Activism’, a guide for anyone to become an active citizen.